from rest_framework.views import exception_handler
from django.db import DatabaseError
from rest_framework.response import Response
from rest_framework import status
import logging

logger = logging.getLogger("django")


def custom_exception_handler(exc, context):
    """
    异常处理
    """
    response = exception_handler(exc, context)
    if response is None:
        view = context["view"]
        if isinstance(exc, DatabaseError):
            # 数据库异常
            logger.error('[%s] %s' % (view, exc))
            response = Response({'msg': '服务器内部错误,请联系相关工作人员'}, status=status.HTTP_507_INSUFFICIENT_STORAGE)

    return response
